Radiographic and computed tomographic appearance of tracheal collapse with axial rotation in four dogs

Heng, Hock Gan; Lim, Chee Kin; Gutierrez-Crespo, B.; Guptill, Lynn

doi:10.1111/jsap.12679

Cited by 8 publications

(8 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The apparent dorsoventral narrowing and loss of clarity of the tracheal lumen at this level could be explained by the axial tracheal rotation that was identified at surgery. This unusual finding has previously been reported in four dogs with dorsoventral tracheal collapse and resulted in increased dorsoventral tracheal height with an apparent intraluminal soft tissue opacity (Heng et al 2018).…”

Section: Discussionsupporting

confidence: 79%

See 1 more Smart Citation

Atypical lateral tracheal collapse in a Yorkshire terrier

Hall

Baines

2018

J of Small Animal Practice

View full text Add to dashboard Cite

A 10-month-old, neutered female Yorkshire terrier was presented with a 6-month history of inspiratory dyspnoea, coughing and exercise intolerance. Tracheoscopy revealed marked lateral-to-lateral fixed collapse of the cervical trachea and mild collapse of the thoracic trachea. Surgical exploration revealed a marked reduction in lateral tracheal width and multiple malformed tracheal rings. Placement of extraluminal ring prostheses around the cervical trachea resulted in widening of the tracheal diameter and an immediate improvement in clinical signs. 6 years postoperatively the patient was reported to have an excellent quality of life with complete resolution of clinical signs.

show abstract

Section: Discussionsupporting

confidence: 79%

“…This unusual finding has previously been reported in four dogs with dorsoventral tracheal collapse and resulted in increased dorsoventral tracheal height with an apparent intraluminal soft tissue opacity (Heng et al . ).…”

Section: Discussionmentioning

confidence: 97%

Atypical lateral tracheal collapse in a Yorkshire terrier

Hall

Baines

2018

J of Small Animal Practice

View full text Add to dashboard Cite

show abstract

“…Computed tomography allows differentiation between a dorsoventral and laterolateral tracheal collapse, and tracheal rotation (Heng et al, 2018). Radiographs also underestimate the tracheal diameter compared with computed tomography (Montgomery et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

Acute tracheal trauma and chronic tracheal collapse in an asthmatic mature pony

Peyrecave‐Capo

Munoz‐Diaz

Ferrer

et al. 2022

Equine Veterinary Education

View full text Add to dashboard Cite

Summary A 17‐year‐old cross‐bred pony gelding was presented for acute onset of respiratory distress and an inspiratory honking noise. He had been previously diagnosed with moderate mastocytic equine asthma and chronic tracheal collapse on endoscopy (grade 3/4). At admission, predominantly inspiratory dyspnoea with open mouth breathing, hypoxaemia and hypercapnia were present. Cervical and thoracic radiographs showed severe tracheal collapse from the mid‐cervical region to the thoracic inlet and a moderate generalised bronchial pattern. Due to the poor prognosis, euthanasia was elected. On post‐mortem examination, some granulomatous nodules compatible with tracheobronchopathia osteochondroplastica were present in the tracheal lumen, and the entire trachea was laterally flattened. This uncommon laterolateral collapse was more severe at the thoracic inlet and in the mid‐cervical area, where a peritracheal haematoma was detected. A blunt trauma that exacerbated the tracheal collapse was suspected. Tracheal histology revealed degenerative changes. Degeneration of tracheal cartilage and connective tissue can be a predisposing factor to chronic collapse and recurrent episodes of inspiratory and expiratory distress. It is unknown whether chronic tracheal collapse is an independent condition or a consequence of an underlying lung disease.

show abstract

“…Utilising only lateral radiographic and fluoroscopic images does not fully evaluate the circumferential morphology of the trachea. Recent literature in dogs suggests an axial rotation of the trachea at the thoracic inlet . If this same morphology holds true in American Miniature Horses, lateral radiographs without orthogonal projections may not evaluate the true tracheal height within the thoracic inlet.…”

Section: Discussionmentioning

confidence: 99%

Radiographic tracheal lumen to vertebral ratios in the normal American Miniature Horse

Every

Hostnik

et al. 2019

Equine Veterinary Journal

View full text Add to dashboard Cite

Summary Background Tracheal collapse in horses is reportedly uncommon; however, American Miniature Horses are more commonly affected. There is no description of the tracheal luminal diameter of American Miniature Horses, making early detection of tracheal luminal narrowing difficult. Objectives To 1) describe radiographic tracheal luminal diameter in clinically normal American Miniature Horses, 2) report the prevalence of subclinical tracheal collapse in a population of American Miniature Horses, and 3) use tracheal videofluoroscopy to quantify variation in tracheal luminal diameter throughout the respiratory cycle in horses with no clinical respiratory disease. Study design Descriptive observational reference interval study. Methods Thirty‐four American Miniature Horses with no reported history of respiratory illness were recruited. Lateral cervical and thoracic radiographs were obtained in unsedated standing horses. Dynamic fluoroscopic images were obtained of the cervical and thoracic trachea throughout the respiratory cycle. Horses were then sedated as needed and tracheoscopy was performed. Twenty‐nine horses were categorised as normal, and five horses were categorised as subclinically affected based on 25% or greater tracheal narrowing using tracheoscopy for visual assessment. Radiographic tracheal lumen to vertebral body measurements were obtained throughout the cervical and thoracic trachea. Maximum and minimum fluoroscopic tracheal diameter at each site throughout the respiratory cycle was recorded. Results A mean, median, 95% confidence interval and bootstrapped 95% reference interval of radiographic tracheal diameter to vertebral body ratios were generated in normal horses. The prevalence of subclinical tracheal collapse in this population of American Miniature Horses is 14.7%. Main limitations Bootstrapped reference range was generated from 29 horses. Conclusions Radiographic tracheal measurements and ratios of the tracheal diameter to vertebral body in the normal American Miniature Horse are described herein and can be used as a guideline when screening for tracheal disease in American Miniature Horses. The prevalence of subclinical tracheal collapse in American Miniature Horses may be higher than previously reported.

show abstract

Radiographic and computed tomographic appearance of tracheal collapse with axial rotation in four dogs

Cited by 8 publications

References 13 publications

Atypical lateral tracheal collapse in a Yorkshire terrier

Atypical lateral tracheal collapse in a Yorkshire terrier

Acute tracheal trauma and chronic tracheal collapse in an asthmatic mature pony

Radiographic tracheal lumen to vertebral ratios in the normal American Miniature Horse

Contact Info

Product

Resources

About